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2 SheetsSheet 1.

(No Model.)

E. DEL VALLE.

BOILER FEEDER.

No. 285,585. Patented Sept. 25, 1883.

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(N0 Model.) 2 Sheets-Sheet 2,

I -E. DEL VALLE.

BOILER FEEDER. No. 285,585.. Patented Sept. 25, 1883.

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NITED STATES PATENT O FICE.

ELISEO DEL VALLE, OF PONQE, PORTO RICO.

BOILER-FEEDER.

} SPECIFICATION forming part of Letters Patent No. 285,585, datedSeptember 25, 1883;

Application filed January 15, 1883. (No model.)

feeders in which a flow of water to the boiler is effected from anelevated supply-tank by transmitting the pressure in the boiler to thetank through a connecting steam-pipe which opens automatically when thewater in the boiler falls below a given level.

The object of my invention is to provide a compact boiler-feedingdevice, which, so long as there remains asupply of water in thefeedtank, will operate automatically to maintain the proper water-levelin the boiler without the opening and closing of a valve or valves orthe intervention or use of a float or other mechanical device.

I t consists in the co1nbination,in a single device, of two nearlyconcentric tubes, of which the inner one shall open into the boiler, orinto a chamber connected therewith, at the working water-level, andextend thence to the top of the closed supply-tank, and the outer one,opening at its lower end into the boiler or its connected chamber belowits said water-level,

shall communicate at its upper end with the bottom of the tank. Thisdevice admits of ready attachment to the boiler and tank, and willoperate automatically to equalize the pressure in the two and admit ofaflow of water from the one to the other whenever the water in theboiler falls below its proper level.

In the accompanying drawings, Figure 1 is a longitudinal section of myimproved boilerfeeding device detached.

Figs. 2 and 3 are respectively transverse sections in lines as x and y yof Fig. '1. Fig. 4 is a sectional view,

illustrating the application of my device to a boiler and tank by meansof an intermediate chamber, and Fig. 5 illustrates its directapplication to the boiler without this intermedt ate chamber.

A represents a steam-boiler; B, a closed steam-tight tank, supported atsuch an elevation above the.boiler as that its contents shallautomatically flow by gravity into the boiler when the pressure in theboiler and tank is equalized. The tank B is filled with water, asrequired, by means of a supply-pipe, K, controlled by a valve, -L.

G is a pipe or conduit opening at its upper .end into the tank near tothe top thereof, and

which, extending thence, is carried into the boiler and terminates atthe proper waterlevel therein;

D is a second pipe or conduit connecting the tank with the boiler, andwhich opens at at its upper end into the bottom of the tank and atitslower end into the boiler on a level below the mouth of the pipe 0.

The pipes O andD are combined to form a single device by inserting thelower end of the longer pressure-pipe, 0, within the shorter pipe, D,and uniting the two at one side, as shown in Figs. 1 and 2, the pipe Dbeing made so much larger than C as to leave an open channel betweenthem.

the pipes are joined (see Figs. 1 and 2) furnishes an opening into thelower end of the pipe 0, at a point above the lower end of the outerpipe, D. The upper end of the outer pipe is flanged or threaded to admitof being readily fitted to the boiler, so as to project therein, and forconnection, also, either directly or by means of an interposed nipple orjointtube, H, Fig. 1, with the tank B.

Instead of opening directly into the boiler A, the feed-pipes G D arepreferably connected with a small closed vessel, E, interposed betweenthe boiler and tank, andsoconnected with the boiler by a pipe, F, asthat the water shall remain at the same level in the one as in theother. A valve, G, is provided in said pipe to close the communicationbetween the boiler A and the supply-tank B when the latter is to berefilled.

In the operation of my improved boiler; feeder the boiler and tank arefilled with water to expel the air therefrom, and the water in theboiler is drawn off to its proper level, leaving a suitable steam-spaceabove it. The communication between the boiler and tank through thepipes C andD is now left entirely open, the supply-pipe K to the tankbeing closed. With the lower end of the pipes cov- A notch, i, cut outof 7 5 the lower end of the device at the point where too cred by thewater in the boiler a flow of water from the tank through the pipe D isprevented by atmospheric pressure until a steammeans a constant feed ofwater to the boiler is maintained, supplying continuously the waste byevaporation until the tank B is exhausted and filled with steam. \Vhenthis occurs, the

communication with the boiler may be cut oil? by the valve G, providedfor the purpose, and the supply-pipe K opened, whereupon thecondensation of the steam in the tank will create a vacuum therein,which will operate to draw in a fresh supplyof water from the reservoirconnected with said pipe K. v

I am aware it is not new to supply water to a boiler from an elevatedtank by means of an admission of steam-pressure from the boiler to saidtank through communicating pipes.

I claim as my invention and desire to secure by Letters Patent- A boilerfeeding device constructed of a tube, D, adapted to connect the bottomof an elevated tank with the top of the boiler, or of a chamberconnected therewith, and to project into the same below its water-level,and a smaller tube, G, fitted within and joined to the tube D to extendfrom the lower end thereof upward into the elevated tank, and having 7 aindependent communication with the boiler at its water-level,substantially in the manner an d for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ELISEO DEL VALLE.

WVitnesses:

CALEB BESOSA, ADOLFO E. BESOSA.

